HMD 46-II Series

Sennheiser’s HMD 46-II Series are lightweight headsets for air traffic controllers and C3 operators requiring excellent sound performance and long-term wearing comfort.
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Sennheiser’s HMD 46-II Series of very lightweight, extremely comfortable headsets are designed specifically for all air traffic control communication and C3 (Command, Control & Communications) operators requiring excellent sound and long-term wearing comfort. A noise-cancelling microphone delivers optimum speech clarity for reduced “call-back/read-back” events. The headset can be operated in two channel mode. Soft acoustic foam ear pads and patented two-piece automatic headband deliver first class comfort with a perfect, secure fit. A flip away headphone allows for single-sided listening and a reinforced flexible microphone boom allows for left or right sided use. The headsets feature a single sided cable which is easy to exchange. Sennheiser ActiveGard® technology protects users hearing against acoustic injury caused by a sudden sound burst on the line, without interrupting communications - an added safety feature that differs from traditional acoustic shock clipping circuitry. The headset features a dynamic microphone and the series consists of two variants: HMD 46-3-II (double-sided including ActiveGard®) and HMD 46-31-II (double-sided without ActiveGard®)


  • Sennheiser Voice Clarity for accurate communication, provides excellent voice transmission and reception

  • Perfect speech transmission Noise-cancelling microphone filters out ambient noise for optimum speech clarity to reduce “call-back/read-back” events

  • Fits every application with a choice of electret/dynamic microphone, and single sided or dual sided earcup model

  • Two channel stereo application for multi-channel communication

  • Sound protection from acoustic injury caused by sudden sound bursts on the line with Sennheiser ActiveGard® technology

What's in the box?

  • Headset HMD 46
  • Cable clip
  • Wind and pop screen
  • Safety Guide
  • Quick Guide

Technical Data

  • Color
  • Impedance
  • Frequency response (Microphone)
    100 - 12,000 Hz
  • Transducer principle (Microphone)
    Dynamic, noise cancelling, uni-directional
  • Frequency response (Headphones)
    20 - 14,000 Hz
  • Microphone
    Load resistance 150 - 2,200 Ohm
  • THD, total harmonic distortion
    < 1 % at 95 dB SPL (300 - 3,000 Hz)
  • Contact pressure
    2.7 N
  • Ear coupling
    Supra-aural (on ear)
  • Weight
    150 g /5.29 oz
  • Storage temperature
    -55 °C - +70 °C
  • Operating temperature
    -15 °C - +55 °C
  • SPL for peak deviation
    95 dB (1 kHz, 1 mW)


  • Fact Sheets
    • Fact Sheet HME 46-II and HMD 46-II Series (240 KB) Download

  • EU Declaration of Conformity
    • Declaration of Conformity (440 KB) Download

  • Digital Brochures
WARNING (for California residents only): This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects and other reproductive harm. For more information go to: